Yes advanced auto or autozone can reset this light with a scan tool for nothing. You can also do this yourself if you disconnect the battery cables for 5 minutes then reconnect them start your vehicle and let it idle with everything off including the radio and fan blower. Let it idle for 2 to 3 minutes to reset the computer. Provided there are no fault with your car the light will be off and stay off. If not then there is a problem and you would have to have it checked once again with the light on. I hope this helps. Don.t forget to rate my answer, thanks.

For you info. If this is a service engine and not a check engine light then your manual will show you how to extinguish it. If you do not hace the manual just call the chevy service dept. and ask them, they will tell you with no problem. Some cars have this service engine light to remind you to change your oil or some other maintenance item. This light will come on about every 3000 to 4000 miles.For you info. If this is a service engine and not a check engine light then your manual will show you how to extinguish it. If you do not hace the manual just call the chevy service dept. and ask them, they will tell you with no problem. Some cars have this service engine light to remind you to change your oil or some other maintenance item. This light will come on about every 3000 to 4000 miles.

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Hi, the check engine light will require you to have the engine CPU scanned for trouble code's. This can only be administered with the assistance of a diagnostic computer scan tool OBD II. You can purchase this tool, at your local auto parts store, or you can just have the scan ran at your local auto zone parts store, free of charge. Once the diagnostic scan is administered, you will be able to isolate the issues that have caused the check engine light.This scan tool will display a print out code and the location of the issue, on the engine, as well. There are Many issues that will cause the engine light to illuminate, but the most common cause will be a failed monitoring sensor, or sensor harness failure(separated power wire, or ground). After retrieving the code, it will be interpreted to know what caused the lights to come up and that will be used to fix the problem.

There is a huge list of reason that the check engine light could have come on but the only thing i can do is send you to someone that can scan the light. autozone, pep boys, advanced auto, all have the scan tools and they will usually check why the light is on for free.

CELs (Check Engine Light) come on for many various reasons. The only way to know which code triggered the light is to hook up a scan tool to it. You can go to any Auto Zone or Advance Auto Parts stores and they will do it for free.

Once triggered, these codes must be 'cleared'. This is also done with the scan tool. You can also buy scan tools from the aftermarket.

You can try to disconnect the battery for at least 30mins for a 'hard reset' - that will clear the CEL on some vehicles. But if your stereo has a security code feature, you'll also need the code to enter after you hook the battery back up, or the stereo will not function. So be careful here. Your car manual should have the info about that.

Please make sure there is no air entering the engine behind the maf, such as a vacuum leak or leaks in ducting between the maf and the throttle body.

If that's no the case then its an issue with injectors clogging and they are not working due to "fretting". This "fretting" is electrical terminals to injectors getting oxidation on them and is fixed by unplugging them and replugging them in. The fix is to put a small dab of die-electric grease on the terminals.

I would suggest an injector service with the new GM procedure using "Top Engine Cleaner". This may be all you need but that P0420 bothers me. P0420, Catalyst System Efficiency Below Threshold, can be set by a poor connection at the PCM or a damaged wiring harness.